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प्रश्न
Distinguish cytokinesis from karyokinesis.
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उत्तर
| Cytokinesis | Karyokinesis | |
| 1 | Cytokinesis is the division of the cytoplasm of cell. | Karyokinesis is the division of the nucleus of a cell. |
| 2 | It occur at the end of M-phase, after the neculear division is over. | It occur during M-Phase of cell cycle before cytokinesis begin to proceed. |
| 3 | Stages such as prophase, metaphase, anaphase, and telophase are not present in cytokinesis. | It is divided into four stages: prophase, metaphase, anaphase, and telophase |
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संबंधित प्रश्न
What is the average cell cycle span for a mammalian cell?
What is G0 (quiescent phase) of cell cycle?
Analyse the events during every stage of cell cycle and notice how the following two parameters change.
- Number of chromosomes (N) per cell
- Amount of DNA content (C) per cell
Cells in the quiescent stage (Go)
Match List - I with List - II.
| List I | List II | ||
| (a) | S phase | (i) | Proteins are synthesized |
| (b) | G2 phase | (ii) | Inactive phase |
| (c) | Quiescent stage | (iii) | Interval between mitosis and initiation of DNA replication |
| (d) | G1 phase | (iv) | DNA replication |
Choose the correct answer from the options given below.
The centriole undergoes duplication during ______
Cells which are not dividing are likely to be at ______.
Between a prokaryote and a eukaryote, which cell has a shorter cell division time?
Which of the phases of cell cycle is of longest duration?
It is said that the one cycle of cell division in human cells (eukaryotic cells) takes 24 hours. Which phase of the cycle, do you think occupies the maximum part of cell cycle?
Mitosis results in producing two cells which are similar to each other. What would be the consequence if the following irregularities occur during mitosis?
Duplication of DNA does not occur
Two key events take place, during S phase in animal cells, DNA replication and duplication of centriole. In which parts of the cell do events occur?
Comment on the statement – Telophase is reverse of prophase.
Name the phase of the cell cycle at which the following event occurs:
Chromosomes are moved to spindle equator.
Name the phase of the cell cycle at which the following event occurs:
Centromere splits and chromatids separate.
Following are the stages of cell division:
- Gap 2 phase
- Cytokinesis
- Synthesis phase
- Karyokinesis
- Gap 1 phase
Choose the correct sequence of stages from the options given below:
